webpack.config.js
const path = require('path');
const Dotenv = require('dotenv-webpack');
const FilterWarningsPlugin = require('webpack-filter-warnings-plugin');
const nodeExternals = require('webpack-node-externals');

module.exports = {
   entry: "./src/server.ts",
   externals: [nodeExternals()],
   output: {
       filename: "bundle.js",
       path: path.resolve(__dirname, 'dist')
   },
   resolve: {
       extensions: [".webpack.js", ".web.js", ".ts", ".js"]
   },
   module: {
       rules: [{ test: /\.ts$/, loader: "ts-loader" }]
   },
   plugins: [
        new Dotenv({
            path: './.env',
            safe: false,
        }),
        new FilterWarningsPlugin({
            exclude: [/mongodb/, /mssql/, /mysql/, /oracledb/, /pg/, /pg-native/, /pg-query-stream/, /react-native-sqlite-storage/, /redis/, /sqlite3/, /sql.js/, /typeorm-aurora-data-api-driver/]
        })
   ],
   target: 'node',
   node: {
    global: false,
    __filename: 'mock',
    __dirname: 'mock',
  }
}

WEBPACK BUNDLE LOG
$ webpack --mode production
Hash: b06098c1e10491023139
Version: webpack 4.41.5
Time: 23639ms
Built at: 2020-01-23 18:03:50
    Asset      Size  Chunks             Chunk Names
bundle.js  46.9 KiB       0  [emitted]  main
Entrypoint main = bundle.js
 [0] external "express" 42 bytes {0} [built]
 [3] external "typeorm" 42 bytes {0} [built]
[12] external "dotenv" 42 bytes {0} [built]
[15] ./src/server.ts 7.16 KiB {0} [built]
[16] external "reflect-metadata" 42 bytes {0} [built]
[17] external "express-session" 42 bytes {0} [built]
[18] external "body-parser" 42 bytes {0} [built]
[19] external "express-rate-limit" 42 bytes {0} [built]
[20] external "path" 42 bytes {0} [built]
[21] external "helmet" 42 bytes {0} [built]
[22] ./src/routes/register.ts 1.43 KiB {0} [built]
[24] ./src/routes/login.ts 3.34 KiB {0} [built]
[25] ./src/routes/logout.ts 557 bytes {0} [built]
[26] ./src/routes/me.ts 531 bytes {0} [built]
[27] ./src/routes/sendresetemail.ts 441 bytes {0} [built]
    + 33 hidden modules
Done in 42.77s.


ERROR
node bundle.js
internal/modules/cjs/loader.js:638
    throw err;
    ^
Error: Cannot find module 'reflect-metadata'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at Object.<anonymous> (/home/kuba8369/asdasdasd/bundle.js:1:26042)
    at n (/home/kuba8369/asdasdasd/bundle.js:1:110)
    at Object.<anonymous> (/home/kuba8369/asdasdasd/bundle.js:1:23963)
    at Object.<anonymous> (/home/kuba8369/asdasdasd/bundle.js:1:26002)
    at n (/home/kuba8369/asdasdasd/bundle.js:1:110)
    at /home/kuba8369/asdasdasd/bundle.js:1:902